Die for making bolster-plates



(NQ Model.) 2 Sheets-Sheet 1.

H. JAMES; DIE POR MAKING BOLSTER PLATES. 180.288,88@l Patented May 18, 1884..

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(No Model.) 2 Sheets-Sheet 2. H. JAMES.

DIE FOR MAKINGBOLSTBR PLATES. y Y No. 298,586. Patented Mey 13, 18821.

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DIE FOR MAKING BOLSTE/R-PLATES.

SPECIFICATION forming part of Letters Patent No. 298,586, dated May 13, 1884.

Application filed September 28,1883, (No model.)

fe @ZZ whom, it may concern,.-

Be it known that I, HENRY JAMES, a. citizen of the United States,residing at Memphis, in the county of Shelby and State of Tennessee, have invented Improved Means for Manufacturing Bolster-Ilates, of which the following is a specication.

My invention relates to bolster-plates for vehicles; and it consists in improved means for the manufacture and production of such plates, more especially those shown in Letters Patent of the United States No. 281,076, dated July l0, 1883.

Referring to the drawings, Figure 1 is a sectional view of the upper or rocking bolster plate. Fig. 2 is a perspective view of the same. Fig. 3 is a sectional view of the lower or sand bolster plate. Fig. 4 is aperspective view of the same. Fig. 5 is a perspective View of the dies employed in stamping out the upper plate, and illustrating the metal entering said dies, as well as the form of the stamped plate. Fig. 6 is a top or plan View of the lower die, showing one of the blanks supported on the rollers of thelower die,ready to be operated by the male die or follower. Fig. 7 is a longitudinal central section of the male die or follower, its punch, and the lower die with an interposed blank. Fig. 8 is a transverse section of the male die or follower, its punch, and the lower die, showing the blank converted into a completed upperbolster plate. Fig. 9 is a front elevation of the rolls for forming the lower-bolster plate. Fig. 10 is a perspective view of a part of the bar as it comes from the rolls, and Fig. 11 is a central cross-section of the rolls shown in Fig. 8.

Figs. 1, 2, 3, and 4 illustrate the upper and lower bolster plates shown in Letters Patent No. 281,076, granted to nie the 10th day of July, 1883. The upper or rocking bolster plate, G, which is composed of a single piece of metal, has a centrally-located boss, D, rising from its upper surface, said boss having a perforation, B', adapted to receive the kingbolt, and is also provided at each angle with upwardly-projecting lugs E,which are adapted to lie against the longitudinal faces of the bolster. XVithin the body of the upper plate,

sion that it will sit upon and fit closely over a collar, a, formed upon the lower or sand bolster plate. is shown in Figs. 3 and 4, the collar a being formed upon its upper surface, and having a central perforation which registers with the perforation in the boss D.- Perforations b and b are formed in the upper and lower plates, respectively, and are countersunk upon the adjacent faces of the plates, through which pass bolts or screws for connecting the same, respectively,with the bolster and sand-bolster, as usual. Perforations d are also formed in the lugs E, and, as stated in my said'patent, lugs of a similar construction may, if desired, be formed upon` the lower plate as well as upon the upper. v

' In manufacturing this form of bolster-plate the sand-bolster plate is submitted to the action of roller-dies F F, Fig. 11, until it is drawn into a shape approximating its proper form. In the face of one roll, F, is formed a circular recess or depression, f, arranged at s'uch apoint that when the plate passes through the rolls for the last time the metal is driven into said recess, forming a solid boss or projection, a, thereon about one and one-quarter inch in diameter, and having a height of about threeeighths of an inch. A perforation to receive the king-bolt is then punched centrally through said boss, the end perforations b are formed, and the plate is trimmed into shape, and is then complete, save when lugs are to be formed thereon similar to the lugs E upon the rockingbolster plate. The lower roll, F', is' formed with two channels, ff, having their inner wall beveled, and the roll is cut away between said channels to the thickness of the plate when finished. I may form more than one recess f in the upper roll, as seen in Fig. 11, for the purpose of rolling a continuous bar in the form shown in Fig. 10, which may afterward be cut into suitable lengths. It will be seen that as this plate comes from the rolls its edges will be slightly iianged by the channels f f', while a solid boss, a, will be formed upon the upper surface by the action of said rolls. The

Ihe construction of the latter opening for the king-bolt is punched centrally through the boss, and the bar is cut between the adjacent collars thus formed, after which it is trimmed and finished.

The upper-bolster plate is made in the following manner A bar of iron or steel is rolled into suitable form and thickness, with its edges beveled, substantially as shown in Fig. 5, and the plateis cut to the proper length. By a suitable die or mold or cutter, G G, it is then cut so as to form the lugs E thereon, after which the plate is heated and placed upon the rolls 7L of a lower die, H, as shown in Figs. 6 and S, and a male die or follower, H', carrying a punch, I, as shown in Fig. 7 is made to act thereon, the result ofthe action being that the blank is converted into a bolster-plate with a central opening for the king-bolt and with lugs at each corner for connecting with the bolster, as shown in Fig. 2. Simultaneously with the bending of the lugs E the boss D is formed, together with the offset or equivalent a', which receives the collar a upon the lower plate. This operation is performed in the following manner In the lower die, H, is placed a hollow punch, I, of such dimension as to form the offset or equivalent a within the collar D. Goncentric with this punch is placed a punch, I', in the follower II', said punch being provided with a suitable point, i, which forms a central aperture in the plate. Above this point the body of said punch is conoidal, as shown at t, and its operation is as follows As the follower H is impressed upon the heated plate, it turns the lugs and drives the plate down upon the hollow punch I between the rollers, as shown inv Fig. 8. The punch I is then driven through the central point of the plate, and as the hollow punch I is driven up it strikes up the boss D and spreads the aperture formed by the end i of the punch I. It is of course to be understood that the punch I, and the die or mold to which it is attached, is attached and operated by any of the wellknown means for giving a reciprocating motion thereto, such as an eccentric, a screwpress, 85e. been thought necessary to here illustrate them. The conoidal body i of vthe'latter centers the projection or boss D, and also causes the aperture in which it sinks to spread concentrically with the offset or equivalent a', formed by the hollow punch I. The holes b are then punched in the usual manner, and perforations are formed in the lugs E, which completcs the operation. 'Ihe plate may then be trimmed and surfaced.

The lower plate may be made of the same materials and in the same manner as the upper plate; but it is optional whether lugs are formed thereon or not.

It will be understood that the plate shown in Fig. das entering the dies may be rolled out of any suitable length, and may either be cut up into pieces of suitable size before entering the stamp, or the continuous plate may be fed to the stamp in the manner indicated in the drawings.

Having thus described my invention, what I claim is The combination of the upper die having a concavity in its lower surface, into which extends a punch provided with a shank, with the lower die carrying rolls mounted upon its sides and extending parallel to but upon a higher plane than the top of the die, and also carrying a hollow punch to force the metal into the These being well known, it has not concavity in the upper die, and to receive the punch attached thereto, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HENRY JAMES.

Vitnesses:

J. J. MURPHY, J. G. PAGE. 

